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Height gauge based on dual polarization competition laser
- Source :
- Optics and Lasers in Engineering. 49:445-450
- Publication Year :
- 2011
- Publisher :
- Elsevier BV, 2011.
-
Abstract
- Based on dual polarization competition laser, we develop a new height gauge. By inserting a quartz crystal plate into the laser cavity, one laser beam splits into two orthogonally linear polarized laser beams, which appear one after another with the change in cavity length. After detecting their intensities, we obtain two power-turning curves. The longitudinal mode spacing is divided into 4 equal zones and each one has different intensity phenomena, which provides a new method of height measurement. According to experiments, the direct measuring range of this new method is 12 mm with resolution of 79.1 nm, and the indirect measuring range can be increased using first grade gauge blocks and a liftable platform. Compared to other height gauges such as vernier gauge, inductance sensor and gauge block interferometer, this new instrument has the advantage of self-calibration and simple structure without frequency stabilization system.
- Subjects :
- Physics
business.industry
Mechanical Engineering
Gauge (firearms)
Laser
Atomic and Molecular Physics, and Optics
Electronic, Optical and Magnetic Materials
law.invention
Longitudinal mode
Interferometry
Optics
Dual-polarization interferometry
Height gauge
law
Optical cavity
Electrical and Electronic Engineering
Gauge block
business
Subjects
Details
- ISSN :
- 01438166
- Volume :
- 49
- Database :
- OpenAIRE
- Journal :
- Optics and Lasers in Engineering
- Accession number :
- edsair.doi...........35c953e7f86c88d4cf7b298dcaaa8b90
- Full Text :
- https://doi.org/10.1016/j.optlaseng.2010.11.016